1 2x28 Maglite D Cell Solvent Trap Light Bulb End Cap Set These sets are high quality gloss black anodized and made of Aluminum and will fit Maglite D Cell Flashlights Including LED Models The Interior thread of the Battery End Solvent Trap is 1 2 x28 and the Bulb End Cap is center marked Specifications . Adapter OD Thread 0 5 28. Dimension 4 H x 4 W x 4 L. Weight 1 lbs